Currencies are very easy for trading, traditional and modern, anyhow, I recommend commodities and stocks rather than currencies, as because I am habituated from the beginning dealing with the above stated particles

Not surprisingly, the most dominant and strongest currency, as well as the most widely traded, is the US dollar. The reason for this is the size of the US economy, which is the world's largest. The US dollar is the preferred reference in most currency exchange transactions worldwide. It is the dominant reserve currency of the world. The following are not necessarily the best Forex pairs to trade, but they are the ones that have high liquidity and occupy the most foreign exchange transactions: